CN116949686A - Preparation process of spunbonded spunlaced non-woven fabric - Google Patents
Preparation process of spunbonded spunlaced non-woven fabric Download PDFInfo
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- CN116949686A CN116949686A CN202310885302.0A CN202310885302A CN116949686A CN 116949686 A CN116949686 A CN 116949686A CN 202310885302 A CN202310885302 A CN 202310885302A CN 116949686 A CN116949686 A CN 116949686A
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- woven fabric
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- net
- polypropylene
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- 239000004745 nonwoven fabric Substances 0.000 title claims abstract description 91
- 238000002360 preparation method Methods 0.000 title claims abstract description 39
- -1 polyethylene Polymers 0.000 claims abstract description 98
- 239000000835 fiber Substances 0.000 claims abstract description 90
- 238000001035 drying Methods 0.000 claims abstract description 86
- 239000002994 raw material Substances 0.000 claims abstract description 68
- 238000009987 spinning Methods 0.000 claims abstract description 55
- 239000004698 Polyethylene Substances 0.000 claims abstract description 49
- 239000004743 Polypropylene Substances 0.000 claims abstract description 49
- 229920000728 polyester Polymers 0.000 claims abstract description 49
- 229920000573 polyethylene Polymers 0.000 claims abstract description 49
- 229920001155 polypropylene Polymers 0.000 claims abstract description 49
- 238000005303 weighing Methods 0.000 claims abstract description 10
- 238000009826 distribution Methods 0.000 claims abstract description 4
- 238000012544 monitoring process Methods 0.000 claims abstract description 4
- 238000002844 melting Methods 0.000 claims description 33
- 230000008018 melting Effects 0.000 claims description 33
- 238000001914 filtration Methods 0.000 claims description 22
- 238000003756 stirring Methods 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 16
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000010309 melting process Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 4
- 238000002074 melt spinning Methods 0.000 abstract description 3
- 238000007596 consolidation process Methods 0.000 abstract 1
- 230000035699 permeability Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 4
- 239000000155 melt Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 230000007794 irritation Effects 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/005—Synthetic yarns or filaments
- D04H3/009—Condensation or reaction polymers
- D04H3/011—Polyesters
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D1/00—Treatment of filament-forming or like material
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D1/00—Treatment of filament-forming or like material
- D01D1/10—Filtering or de-aerating the spinning solution or melt
- D01D1/106—Filtering
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/12—Stretch-spinning methods
- D01D5/14—Stretch-spinning methods with flowing liquid or gaseous stretching media, e.g. solution-blowing
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/005—Synthetic yarns or filaments
- D04H3/007—Addition polymers
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
- D04H3/10—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically
- D04H3/11—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically by fluid jet
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
- D04H3/16—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
Abstract
The application discloses a preparation process of spun-bonded spunlaced non-woven fabric, which relates to the technical field of non-woven fabrics and comprises the following steps: the method comprises the steps of preparing raw materials required by preparation of non-woven fabrics, and devices and equipment required in the preparation process, wherein the raw materials required by preparation of the non-woven fabrics are polyester, polyethylene and polypropylene, and the main devices and equipment for preparation of the non-woven fabrics are weighing devices and drying equipment with a humidity monitoring function. According to the application, polyester, polyethylene and polypropylene are layered into a fiber web by slicing, drying, melt spinning and other steps, the fiber web is subjected to hydroentanglement to form a non-woven fabric, the contact area between the fiber bundles is larger, the fiber bundles are alternately overlapped, and after spinning to form a net and hydroentanglement consolidation, a special three-dimensional structure is formed, and when the fiber web is formed, the net forming curtain is continuously rotated to enable the three fiber bundles to be mutually staggered, so that the distribution is more uniform, and the prepared non-woven fabric has compact fiber structure, softer hand feeling and better air permeability.
Description
Technical Field
The application relates to the technical field of non-woven fabrics, in particular to a preparation process of a spun-bonded spunlaced non-woven fabric.
Background
Nonwoven fabrics, also known as nonwovens, nonwoven fabrics, are sheets, webs, or batts made from oriented or randomly arranged fibers that are bonded to one another by friction, cohesion, or adhesion, or a combination of these processes. The non-woven fabric has the characteristics of moisture resistance, ventilation, flexibility, light weight, no combustion supporting, easy decomposition, no toxicity and irritation, rich color, low price, recycling, and the like. Nonwoven fabrics are widely used in the fields of medical treatment, hygiene, home decoration, clothing, industry, agriculture, etc.
Most of the existing non-woven fabrics are formed through thermal bonding and melt blowing, and the production modes are rapid and convenient, but the produced non-woven fabrics are separated in fiber, so that interlayer materials damage the structure of the non-woven fabrics due to different deformation, the dimensional stability and the product performance are influenced, meanwhile, the connection among the fibers is not tight enough, the non-woven fabrics are rough, and the touch feeling and the use comfort are influenced.
Disclosure of Invention
The application aims to provide a preparation process of a spun-bonded spunlaced non-woven fabric, so as to solve the problems in the prior art.
In order to achieve the above purpose, the present application provides the following technical solutions: the preparation process of the spun-bonded spunlaced non-woven fabric comprises the following steps:
s1, preparing raw materials required by preparation of non-woven fabrics, devices and equipment required in the preparation process, wherein the raw materials required by the preparation of the non-woven fabrics are polyester, polyethylene and polypropylene, and the main devices and equipment for the preparation of the non-woven fabrics are a weighing device, a drying device with a humidity monitoring function, a melting device with a stirring function, a filtering device, a spinning device, a stretching device, a cooling device, a net curtain, a water needling device and the like;
s2: weighing the raw materials for preparing the non-woven fabric and the related preparation devices after the preparation of the raw materials for preparing the non-woven fabric is finished, wherein the ratio of the polyester to the polyethylene to the polypropylene is 3:3:2, slicing the polyester to the polyethylene to the polypropylene after the weighing is finished, and keeping the thickness of the slices as the same as possible when the slicing is carried out, so that the materials are dried more uniformly when the materials are dried, the raw materials after the slicing are dried after the slicing is finished, and putting the polyester to the polyethylene to the polypropylene to be dried in different drying devices separately in the drying process, wherein the drying degree and the drying time of the polyester to the polyethylene to the polypropylene are determined according to actual requirements;
s3: after the polyester, the polyethylene and the polypropylene are dried, respectively adding the polyester, the polyethylene and the polypropylene into a melting device for melting, melting solid polyester, the polyethylene, the polypropylene and the like into liquid state, stirring the raw materials in the melting device by a stirring component during melting to accelerate the melting of the materials, metering the melted materials after the melting is finished, measuring the proportion of the three raw materials at the moment, keeping the proportion of the three raw materials at 3:3:2 as far as possible, adding or reducing the raw materials according to the actual proportion if the proportion error is overlarge until the proportion of the polyester, the polyethylene and the polypropylene is close to 3:3:2,
s4: after metering, filtering the melted raw materials by a filtering device, wherein during filtering, polyester, polyethylene and polypropylene are required to be filtered separately, so that the three raw materials are not polluted mutually, after the filtering is finished, metering the raw materials again, and comparing metering results, so that the ratio among the polyester, the polyethylene and the polypropylene is close to 3:3:2;
s5: after the filtration is finished, pouring the filtered raw materials into different spinning devices, wherein the number of the spinning devices is the same as that of the raw materials, each spinning device is provided with a cooling device and a stretching device, before spinning, a net forming curtain is fixed below the spinning device, the spinning position of the spinning device and the surface of the net forming curtain form a certain included angle, and when spinning, the stretching device pulls and pulls the tows sprayed by the spinning device, so that the tows become long and thin to form fiber yarns, and as the raw materials are sprayed by different spinning devices at the same time, the tows fall on the net forming curtain at the same time to be distributed in a staggered way, so as to form a fiber net with even distribution;
s6: after the fiber net is formed, the fiber net and the net forming curtain are taken down together, then the net forming curtain and the fiber net are placed under a hydro-entangled device, high-pressure water sprayed by the hydro-entangled device is used for hydro-entangled the fiber net, fibers among the fiber nets are mutually fused, the fiber yarns are mutually staggered and needled through the hydro-entangled, the fiber yarns are mutually penetrated into other fibers, so that cohesive entanglement is formed among the fibers, the fibers in the fiber net are continuously overlapped, the fluffy fiber net is gradually formed into a non-woven fabric which needs to be prepared through repeated needling, after the non-woven fabric is formed, the water generated by the hydro-entangled non-woven fabric is drained in a natural state, after the water is drained, the non-woven fabric is placed into a drying device, the non-woven fabric is dried at a low temperature, and after the drying is finished, the non-woven fabric is taken out from the drying device, and the preparation of the non-woven fabric can be completed.
Preferably, the nonwoven fabric raw material is dried to such a degree that the moisture content of the polyester is 90ppm or less, the moisture content of the polyethylene is 120ppm or less, and the moisture content of the polypropylene raw material is 150ppm or less, and the drying degree of the polyester, the polyethylene and the polypropylene is often observed to prevent excessive drying of the polyester, the polyethylene and the polypropylene.
Preferably, when the raw materials are melted by the melting device, the stirring component of the melting device needs to stir the raw materials in the melting process, so that the melting of the raw materials is accelerated, and the rotation speed of the stirring component is 2000-2500 revolutions per minute.
Preferably, when the raw materials for preparing the non-woven fabric are dried, the drying time and the drying temperature of each material are different, wherein the drying temperature of the polyester is 70-90 ℃, the drying time is 10-15 hours, the specific drying time is correspondingly adjusted to the time required for preparing the non-woven fabric, the drying temperature of the polyethylene is 60-80 ℃, the drying time is 7-10 hours, the specific drying time is correspondingly adjusted to the time required for preparing the non-woven fabric, the drying temperature of the polypropylene is 50-90 ℃, the drying time is 8-12 hours, and the specific drying time is correspondingly adjusted to the time required for preparing the non-woven fabric.
Preferably, when the raw materials are filtered, the mesh number of the filter screen of the filtering device is preferably 200-500 meshes, the filter screen of the filtering device is set to be a multi-layer filter screen, and the mesh number of the filter screen is sequentially increased from top to bottom.
Preferably, the internal working temperature of the spinning device is 300-400 ℃, the pressure of a machine head of the spinning device is 30-35bar, the stretching airflow pressure of the stretching device is 0.7bar, and the air temperature of the stretching device is 280 ℃.
Preferably, after the net forming curtain is fixed, a driving device capable of driving the net forming curtain to rotate is additionally arranged at the bottom of the net forming curtain, and when the fiber bundles fall on the net forming curtain, the driving device drives the net forming curtain to continuously rotate, so that the fiber bundles are uniformly distributed on the surface of the net forming curtain, and the fiber bundles are prevented from being stacked at a certain position of the net forming curtain.
Preferably, when the spinning device is used for spinning, the vertical height of the spinning device and the net-forming curtain is 300-500mm, the maximum vertical height of the spinning device and the net-forming curtain cannot exceed 550mm, and the spinning device is arranged above the net-forming curtain in a surrounding mode with the center of the net-forming curtain being equidistant.
Preferably, the fiber bundles need to be hydroentangled immediately before the fiber net is completely cooled after forming the fiber net on the net forming curtain, and when the fiber net is subjected to the hydroentangling by the hydroentangling device, the distance between the hydroentangling needle and the fiber net is kept between 200 mm and 300mm, and the maximum distance between the hydroentangling needle and the fiber net is not more than 350mm.
Preferably, when the non-woven fabric is dried, the non-woven fabric is placed in a drying device, the temperature of the drying device is adjusted to be 30 ℃, the drying time is 5-8 hours, the specific drying time is adjusted according to the required drying degree of the non-woven fabric, and when the non-woven fabric is drained, the non-woven fabric cannot be subjected to operations such as hand twisting or spin drying.
In summary, the application has the technical effects and advantages that:
in the application, polyester, polyethylene and polypropylene are formed into a fiber net by superfine fiber bundles in the process layers of slicing, drying, melt spinning and the like, and then the fiber net is subjected to hydroentanglement to form the non-woven fabric.
Drawings
In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic operation flow chart of a preparation process of a spunbonded spunlaced nonwoven fabric provided by the application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Examples: referring to the preparation process of the spunbonded spunlaced nonwoven fabric shown in fig. 1, the preparation process comprises the following steps:
s1, preparing raw materials required by preparation of non-woven fabrics, devices and equipment required in the preparation process, wherein the raw materials required by the preparation of the non-woven fabrics are polyester, polyethylene and polypropylene, and the main devices and equipment for the preparation of the non-woven fabrics are a weighing device, a drying device with a humidity monitoring function, a melting device with a stirring function, a filtering device, a spinning device, a stretching device, a cooling device, a net curtain, a water needling device and the like;
s2: weighing the raw materials for preparing the non-woven fabric and the related preparation devices after the preparation of the raw materials for preparing the non-woven fabric is finished, wherein the ratio of the polyester to the polyethylene to the polypropylene is 3:3:2, slicing the polyester to the polyethylene to the polypropylene after the weighing is finished, and keeping the thickness of the slices as the same as possible when the slicing is carried out, so that the materials are dried more uniformly when the materials are dried, the raw materials after the slicing are dried after the slicing is finished, and putting the polyester to the polyethylene to the polypropylene to be dried in different drying devices separately in the drying process, wherein the drying degree and the drying time of the polyester to the polyethylene to the polypropylene are determined according to actual requirements;
s3: after the polyester, the polyethylene and the polypropylene are dried, respectively adding the polyester, the polyethylene and the polypropylene into a melting device for melting, melting solid polyester, the polyethylene, the polypropylene and the like into liquid state, stirring the raw materials in the melting device by a stirring component during melting to accelerate the melting of the materials, metering the melted materials after the melting is finished, measuring the proportion of the three raw materials at the moment, keeping the proportion of the three raw materials at 3:3:2 as far as possible, adding or reducing the raw materials according to the actual proportion if the proportion error is overlarge until the proportion of the polyester, the polyethylene and the polypropylene is close to 3:3:2,
s4: after metering, filtering the melted raw materials by a filtering device, wherein during filtering, polyester, polyethylene and polypropylene are required to be filtered separately, so that the three raw materials are not polluted mutually, after the filtering is finished, metering the raw materials again, and comparing metering results, so that the ratio among the polyester, the polyethylene and the polypropylene is close to 3:3:2;
s5: after the filtration is finished, pouring the filtered raw materials into different spinning devices, wherein the number of the spinning devices is the same as that of the raw materials, each spinning device is provided with a cooling device and a stretching device, before spinning, a net forming curtain is fixed below the spinning device, the spinning position of the spinning device and the surface of the net forming curtain form a certain included angle, and when spinning, the stretching device pulls and pulls the tows sprayed by the spinning device, so that the tows become long and thin to form fiber yarns, and as the raw materials are sprayed by different spinning devices at the same time, the tows fall on the net forming curtain at the same time to be distributed in a staggered way, so as to form a fiber net with even distribution;
s6: after the fiber net is formed, the fiber net and the net forming curtain are taken down together, then the net forming curtain and the fiber net are placed under a hydro-entangled device, high-pressure water sprayed by the hydro-entangled device is used for hydro-entangled the fiber net, fibers among the fiber nets are mutually fused, the fiber yarns are mutually staggered and needled through the hydro-entangled, the fiber yarns are mutually penetrated into other fibers, so that cohesive entanglement is formed among the fibers, the fibers in the fiber net are continuously overlapped, the fluffy fiber net is gradually formed into a non-woven fabric which needs to be prepared through repeated needling, after the non-woven fabric is formed, the water generated by the hydro-entangled non-woven fabric is drained in a natural state, after the water is drained, the non-woven fabric is placed into a drying device, the non-woven fabric is dried at a low temperature, and after the drying is finished, the non-woven fabric is taken out from the drying device, and the preparation of the non-woven fabric can be completed.
In a preferred embodiment of the present example, the nonwoven fabric raw material is dried to such a degree that the polyester water content is 90ppm or less, the polyethylene water content is 120ppm or less, and the polypropylene raw material water content is 150ppm or less, and the drying degree of the polyester, the polyethylene, and the polypropylene is often observed to prevent excessive drying of the polyester, the polyethylene, and the polypropylene.
In a preferred embodiment of the present embodiment, when the melting device melts the raw material, the stirring member of the melting device needs to stir the raw material in the melt, so as to accelerate the melting of the raw material, and the rotation speed of the stirring member is 2000-2500 rpm.
As a preferred implementation manner of this example, when the raw materials for preparing the non-woven fabric are dried, the drying time and the drying temperature of each material are different, wherein the drying temperature of the polyester is 70-90 ℃, the drying time is 10-15 hours, the specific drying time is correspondingly adjusted to the time required for preparing the non-woven fabric, the drying temperature of the polyethylene is 60-80 ℃, the drying time is 7-10 hours, the specific drying time is correspondingly adjusted to the time required for preparing the non-woven fabric, the drying temperature of the polypropylene is 50-90 ℃, the drying time is 8-12 hours, and the specific drying time is correspondingly adjusted to the time required for preparing the non-woven fabric.
As a preferable implementation manner of the embodiment, when the raw materials are filtered, the mesh number of the filter device is preferably 200-500 meshes, the filter device is preferably provided with a plurality of layers of filter screens, and the mesh number of the filter devices is sequentially increased from top to bottom.
As a preferable implementation manner of the embodiment, the internal working temperature of the spinning device is 300-400 ℃, the pressure of a machine head of the spinning device is 30-35bar, the stretching airflow pressure of the stretching device is 0.7bar, and the air temperature of the stretching device is 280 ℃.
As a preferable implementation mode of the embodiment, after the net forming curtain is fixed, a driving device capable of driving the net forming curtain to rotate is added to the bottom of the net forming curtain, and when the fiber bundles fall on the net forming curtain, the driving device drives the net forming curtain to continuously rotate, so that the fiber bundles are uniformly distributed on the surface of the net forming curtain, and the fiber bundles are prevented from being accumulated at a certain position of the net forming curtain.
As a preferable implementation mode of the embodiment, when the spinning device performs spinning, the vertical height between the spinning device and the net-forming curtain is 300-500mm, the maximum vertical height between the spinning device and the net-forming curtain cannot exceed 550mm, and the spinning device is arranged above the net-forming curtain in a surrounding mode with the center of the net-forming curtain being equidistant.
As a preferred embodiment of this example, the fiber bundles require hydroentanglement of the fiber web immediately after forming the fiber web on the forming curtain before the fiber web is completely cooled, and the distance between the hydroentangling needle and the fiber web should be maintained between 200-300mm and the maximum distance between the hydroentangling needle and the fiber web should not exceed 350mm when the hydroentangling device hydroentangles the fiber web.
As a preferred embodiment of this example, the nonwoven fabric is put into a drying device when being dried, the temperature of the drying device is adjusted to 30 degrees celsius, the drying time is 5-8 hours, the specific drying time is adjusted to the degree of drying required by the nonwoven fabric, and the nonwoven fabric cannot be subjected to operations such as hand twisting or spin-drying when being drained.
The working principle of the application is as follows:
in the application, polyester, polyethylene and polypropylene are formed into a fiber net by superfine fiber bundles in the process layers of slicing, drying, melt spinning and the like, and then the fiber net is subjected to hydroentanglement to form the non-woven fabric.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present application, and although the present application has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present application.
Claims (10)
1. The preparation process of the spun-bonded spunlaced non-woven fabric is characterized by comprising the following steps of:
s1, preparing raw materials required by preparation of non-woven fabrics, devices and equipment required in the preparation process, wherein the raw materials required by the preparation of the non-woven fabrics are polyester, polyethylene and polypropylene, and the main devices and equipment for the preparation of the non-woven fabrics are a weighing device, a drying device with a humidity monitoring function, a melting device with a stirring function, a filtering device, a spinning device, a stretching device, a cooling device, a net curtain, a water needling device and the like;
s2: weighing the raw materials for preparing the non-woven fabric and the related preparation devices after the preparation of the raw materials for preparing the non-woven fabric is finished, wherein the ratio of the polyester to the polyethylene to the polypropylene is 3:3:2, slicing the polyester to the polyethylene to the polypropylene after the weighing is finished, and keeping the thickness of the slices as the same as possible when the slicing is carried out, so that the materials are dried more uniformly when the materials are dried, the raw materials after the slicing are dried after the slicing is finished, and putting the polyester to the polyethylene to the polypropylene to be dried in different drying devices separately in the drying process, wherein the drying degree and the drying time of the polyester to the polyethylene to the polypropylene are determined according to actual requirements;
s3: after the polyester, the polyethylene and the polypropylene are dried, respectively adding the polyester, the polyethylene and the polypropylene into a melting device for melting, melting solid polyester, the polyethylene, the polypropylene and the like into liquid state, stirring raw materials in the melting device by a stirring component during melting to accelerate the melting of the materials, metering the melted materials after the melting is finished, measuring the proportion of the three raw materials at the moment, and if the proportion error is overlarge, adding or reducing the raw materials according to the actual proportion until the proportion of the polyester, the polyethylene and the polypropylene is close to 3:3:2;
s4: after metering, filtering the melted raw materials by a filtering device, wherein during filtering, polyester, polyethylene and polypropylene are required to be filtered separately, so that the three raw materials are not polluted mutually, after the filtering is finished, metering the raw materials again, and comparing metering results, so that the ratio among the polyester, the polyethylene and the polypropylene is close to 3:3:2;
s5: after the filtration is finished, pouring the filtered raw materials into different spinning devices, wherein the number of the spinning devices is the same as that of the raw materials, each spinning device is provided with a cooling device and a stretching device, before spinning, a net forming curtain is fixed below the spinning device, the spinning position of the spinning device and the surface of the net forming curtain form a certain included angle, and when spinning, the stretching device pulls and pulls the tows sprayed by the spinning device, so that the tows become long and thin to form fiber yarns, and as the raw materials are sprayed by different spinning devices at the same time, the tows fall on the net forming curtain at the same time to be distributed in a staggered way, so as to form a fiber net with even distribution;
s6: after the fiber net is formed, the fiber net and the net forming curtain are taken down together, then the net forming curtain and the fiber net are placed under a hydro-entangled device, high-pressure water sprayed by the hydro-entangled device is used for hydro-entangled the fiber net, fibers among the fiber nets are mutually fused, the fiber yarns are mutually staggered and needled through the hydro-entangled, the fiber yarns are mutually penetrated into other fibers, so that cohesive entanglement is formed among the fibers, the fibers in the fiber net are continuously overlapped, the fluffy fiber net is gradually formed into a non-woven fabric which needs to be prepared through repeated needling, after the non-woven fabric is formed, the water generated by the hydro-entangled non-woven fabric is drained in a natural state, after the water is drained, the non-woven fabric is placed into a drying device, the non-woven fabric is dried at a low temperature, and after the drying is finished, the non-woven fabric is taken out from the drying device, and the preparation of the non-woven fabric can be completed.
2. The process for preparing a spunbonded spunlaced nonwoven as claimed in claim 1, wherein: the non-woven fabric raw material needs to reach the following drying degree when being dried, wherein the water content of polyester is below 90ppm, the water content of polyethylene is below 120ppm, and the water content of polypropylene raw material is below 150ppm, and the drying degree of polyester, polyethylene and polypropylene needs to be frequently observed when the raw material is dried, so that excessive drying of polyester, polyethylene and polypropylene is prevented.
3. The process for preparing a spunbonded spunlaced nonwoven as claimed in claim 1, wherein: when the raw materials are melted by the melting device, the stirring part of the melting device needs to stir the raw materials in the melting process, so that the melting of the raw materials is accelerated, and the rotation speed of the stirring part is 2000-2500 rpm.
4. The process for preparing a spunbonded spunlaced nonwoven as claimed in claim 1, wherein: when the non-woven fabric preparation raw materials are dried, the drying time and the drying temperature of each material are different, wherein the drying temperature of polyester is 70-90 ℃, the drying time is 10-15 hours, the specific drying time is correspondingly adjusted to the time required by the non-woven fabric preparation, the drying temperature of polyethylene is 60-80 ℃, the drying time is 7-10 hours, the specific drying time is correspondingly adjusted to the time required by the non-woven fabric preparation, the drying temperature of polypropylene is 50-90 ℃, the drying time is 8-12 hours, and the specific drying time is correspondingly adjusted to the time required by the non-woven fabric preparation.
5. The process for preparing a spunbonded spunlaced nonwoven as claimed in claim 1, wherein: when the raw materials are filtered, the mesh number of the filter screen of the filtering device is preferably 200-500 meshes, the filter screen of the filtering device is set to be a multi-layer filter screen, and the mesh number of the filter screen is sequentially increased from top to bottom.
6. The process for preparing a spunbonded spunlaced nonwoven as claimed in claim 1, wherein: the internal working temperature of the spinning device is 300-400 ℃, the pressure of a machine head of the spinning device is 30-35bar, the stretching airflow pressure of the stretching device is 0.7bar, and the air temperature of the stretching device is 280 ℃.
7. The process for preparing a spunbonded spunlaced nonwoven as claimed in claim 1, wherein: after the net forming curtain is fixed, a driving device capable of driving the net forming curtain to rotate is additionally arranged at the bottom of the net forming curtain, and when the fiber bundles fall on the net forming curtain, the driving device drives the net forming curtain to continuously rotate, so that the fiber bundles are uniformly distributed on the surface of the net forming curtain, and the fiber bundles are prevented from being stacked at a certain position of the net forming curtain.
8. The process for preparing a spunbonded spunlaced nonwoven as claimed in claim 1, wherein: when the spinning device is used for spinning, the vertical height of the spinning device and the net forming curtain is 300-500mm, the maximum vertical height of the spinning device and the net forming curtain is not more than 550mm, and the spinning device is arranged above the net forming curtain in an equidistance and surrounding mode with the center of the net forming curtain.
9. The process for preparing a spunbonded spunlaced nonwoven as claimed in claim 1, wherein: when the fiber bundles form a fiber net on a net forming curtain, the fiber net needs to be subjected to hydroentanglement immediately before the fiber net is completely cooled, and when the fiber net is subjected to the hydroentanglement by a hydroentangling device, the distance between a hydroentangling needle head and the fiber net is kept between 200 mm and 300mm, and the maximum distance between the hydroentangling needle head and the fiber net is not more than 350mm.
10. The process for preparing a spunbonded spunlaced nonwoven as claimed in claim 1, wherein: when the non-woven fabric is dried, the non-woven fabric is placed into a drying device, the temperature of the drying device is adjusted to be 30 ℃, the drying time is 5-8 hours, the specific drying time is adjusted according to the required drying degree of the non-woven fabric, and when the non-woven fabric is drained, the non-woven fabric cannot be subjected to operations such as hand twisting or spin drying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310885302.0A CN116949686A (en) | 2023-07-19 | 2023-07-19 | Preparation process of spunbonded spunlaced non-woven fabric |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310885302.0A CN116949686A (en) | 2023-07-19 | 2023-07-19 | Preparation process of spunbonded spunlaced non-woven fabric |
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| CN116949686A true CN116949686A (en) | 2023-10-27 |
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| CN202310885302.0A Pending CN116949686A (en) | 2023-07-19 | 2023-07-19 | Preparation process of spunbonded spunlaced non-woven fabric |
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| Country | Link |
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| CN (1) | CN116949686A (en) |
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- 2023-07-19 CN CN202310885302.0A patent/CN116949686A/en active Pending
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